Material

C₁₁

C₁₂

C₁₃

C₃₃

C₄₄

C₅₅

C₆₆

Ge Cubic

46.866

10.184

9.624

Si Cubic

47.726

12.325

12.126

Ge Tetragonal

41.246

21.301

10.486

38.908

9.372

9.372

Si Tetragonal

44.894

19.376

11.813

39.597

11.683

11.683